Height-adjustable pneumatic short circuit grounding device for transformer substation

Abstract

The height-adjustable pneumatic short circuit grounding device comprises a shell and a fixed sleeve, an air pump is arranged outside the shell, a left side connecting cylinder and a right side connecting cylinder are inserted into the two ends of the interior of the shell respectively, and a left side wire and a right side wire are arranged in the left side connecting cylinder and the right side connecting cylinder respectively; the device comprises a shell, a piston groove is formed in the shell, a piston plate is slidably mounted in the piston groove, a conductive connecting rod is arranged in the piston plate, and a control mechanism is arranged in the shell. The annular piston pushes the piston plate to the right side through the connecting rod, the piston plate drives the conductive connecting rod to move to the right side, finally, the left wire and the right wire form a path through the copper shell and the conductive connecting rod, grounding operation is completed, manual close-range operation is not needed, complex circuit control is not involved, use is easy, and operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid safety, and in particular to a height-adjustable pneumatic short-circuit grounding device for a transformer substation. Background Art

[0002] During power grid operations, short-circuit grounding wires are often connected. These are devices used to protect electrical equipment and personnel. They are wires connecting electrical equipment to the ground. When electrical equipment experiences a leakage or electrical fault, the short-circuit grounding wire quickly directs the current to the ground, preventing it from passing through the human body or other equipment and causing electric shock or equipment damage. Short-circuit grounding wires are typically made of conductive materials, such as copper or aluminum, and are connected to the ground via a grounding electrode to ensure that the current can safely return to the ground. Existing short-circuit grounding wires are typically manually operated switches. While simple and easy to use, they are inherently dangerous when high-voltage lines are involved, and manual operation is relatively inefficient. There are also electronically controlled switches currently available on the market, but electronic control methods are not safe and stable in high-voltage lines. Failures in the lines or electronic control devices can result in inaccurate switch operation. To ensure stable operation of the equipment, the electronic control devices and lines must be maintained, resulting in relatively high operating costs. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention provides a height-adjustable pneumatic short-circuit grounding device for substations, which solves the problems of low manual operation efficiency and certain risks of existing short-circuit grounding devices, as well as the high cost of frequent maintenance required for electronic control operations.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A height-adjustable pneumatic short-circuit grounding device for a substation, comprising a housing and a fixed sleeve, an air pump being provided on the outside of the housing, a left connecting cylinder and a right connecting cylinder being inserted at both ends of the interior of the housing, a left wire and a right wire being provided in the left connecting cylinder and the right connecting cylinder, respectively, a piston groove being provided in the interior of the housing, a piston plate being slidably mounted in the piston groove, a conductive connecting rod being provided in the piston plate, and a control mechanism being provided in the interior of the housing;

[0005] An L-shaped fixing rod is provided on the outer wall of the shell. The L-shaped fixing rod is movably inserted into the fixing sleeve. An adjusting mechanism is provided in the fixing sleeve.

[0006] Preferably, the control mechanism includes an annular air cavity opened inside the outer shell, an annular piston is slidably installed in the annular air cavity, two pairs of through holes are opened between the annular air cavity and the piston groove, connecting rods are slidably inserted in the two pairs of through holes, both ends of the two pairs of connecting rods are connected to the annular piston and the piston plate, an air pipe and an exhaust pipe are connected to the annular air cavity, the air pipe is connected to the air pump, and valves are provided on the air pipe and the exhaust pipe.

[0007] Preferably, the adjustment mechanism includes a rotating shaft rotatably installed in a fixed sleeve, and the two ends of the rotating shaft are respectively connected to a handle and a screw rod, and the screw rod is screwed into the L-shaped fixed rod. A pair of limiting grooves are opened in the inner wall of the fixed sleeve, and limiting sliders are respectively slidably installed in the pair of limiting grooves. The pair of limiting sliders are respectively fixedly connected to the two side walls of the L-shaped fixed rod, and two pairs of side plates are provided on the outer wall of the fixed sleeve, and the two pairs of side plates are respectively provided with mounting holes.

[0008] Preferably, one end of the conductive connecting rod is connected to a copper shell, one end of the left wire extends into the copper shell and is connected to a conical copper sleeve, a conical groove is provided inside the copper shell, and the conical copper sleeve can be inserted into the conical groove.

[0009] Preferably, a fixed inner cylinder is provided in the right connecting cylinder, the right wire is fixedly inserted in the fixed inner cylinder and one end of the wire is provided with a copper head, and the other end of the conductive connecting rod can be inserted into the fixed inner cylinder.

[0010] Preferably, a spring is sleeved on the outside of the conductive connecting rod, and two ends of the spring are respectively connected to the piston plate and the inner wall of the piston groove.

[0011] Preferably, a fixing ring is fixedly installed inside the left connecting tube, and the left conductive wire is fixedly inserted in the fixing ring.

[0012] Preferably, fastening bolts are provided on both end side walls of the shell.

[0013] Beneficial effects

[0014] The present invention provides a height-adjustable pneumatic short-circuit grounding device for a substation, which has the following beneficial effects:

[0015] 1. When short-circuit grounding is required, start the air pump to inflate the annular air cavity and push the annular piston to the right. The annular piston pushes the piston plate to the right through the connecting rod and compresses the spring at the same time. The piston plate drives the conductive connecting rod to move to the right, so that one end of the conductive connecting rod contacts the copper head, and the other end of the conductive connecting rod pulls the copper shell to move, so that the conical copper sleeve is inserted into the conical groove, and finally the left wire forms a path with the right wire through the copper shell and the conductive connecting rod, completing the grounding operation. That is, no manual close-range operation is required, and no complex circuit control is involved. It is simple to use and easy to operate.

[0016] 2. When short-circuit grounding is not required, just open the valve to discharge the remaining air in the annular air cavity through the exhaust pipe. Under the action of the spring force reset, the conductive connecting rod moves to the left until it reaches its original position, which plays the role of disconnecting the circuit. The operation of disconnecting the short-circuit grounding is simpler and more convenient.

[0017] 3. The left connecting tube and the right connecting tube are inserted into both ends of the shell and fixed with fastening bolts, so the position of the left connecting tube and the right connecting tube in the shell can be adjusted. By turning the handle to drive the screw to rotate through the L-shaped fixing rod, the position of the shell on the fixed sleeve can be controlled, and then the position of the shell can be adjusted according to the actual situation of the line. It is easy to install and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0019] Figure 2 It is a rear view of the housing of the present invention.

[0020] In the figure: 1. Outer shell; 2. Left connecting tube; 3. Fixing ring; 4. Left wire; 5. Copper shell; 6. Conical groove; 7. Conical copper sleeve; 8. Air pipe; 9. Annular piston; 10. Air pump; 11. Exhaust pipe; 12. Connecting rod; 13. Piston plate; 14. Spring; 15. Conductive connecting rod; 16. Right connecting tube; 17. Fixed inner tube; 18. Copper head; 19. Right wire; 20. L-shaped fixing rod; 21. Fixed sleeve; 22. Side plate; 23. Limiting slide groove; 24. Limiting slider; 25. Screw; 26. Rotating shaft; 27. Handle; 28. Fastening bolt; 29. Annular air cavity. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-2The present invention provides a technical solution: a height-adjustable pneumatic short-circuit grounding device for a substation, comprising a housing 1 and a fixed sleeve 21. An air pump 10 is provided on the outside of the housing 1. A left connecting cylinder 2 and a right connecting cylinder 16 are respectively inserted at both ends of the interior of the housing 1. A left wire 4 and a right wire 19 are respectively provided in the left connecting cylinder 2 and the right connecting cylinder 16. A piston groove is provided inside the housing 1. A piston plate 13 is slidably installed in the piston groove. A conductive connecting rod 15 is provided in the piston plate 13. A control mechanism is provided inside the housing 1.

[0023] An L-shaped fixing rod 20 is provided on the outer wall of the housing 1. The L-shaped fixing rod 20 is movably inserted into a fixing sleeve 21. An adjustment mechanism is provided in the fixing sleeve 21.

[0024] When in use, the left wire 4 and the right wire 19 need to be connected in the circuit. The specific connection method belongs to conventional technical means, and the wire structure is also an existing mature component, so there is no need to introduce its specific structure and detailed installation method in detail;

[0025] The circuit is closed by inflating the annular air cavity 29 with air through the air pump 10, and the circuit is disconnected by exhausting the exhaust pipe 11 and resetting the spring 14. There is no complicated circuit connection, making the overall structure relatively simple and effectively reducing the failure rate.

[0026] Furthermore, the control mechanism includes an annular air cavity 29 opened inside the outer shell 1, an annular piston 9 is slidably installed in the annular air cavity 29, two pairs of through holes are opened between the annular air cavity 29 and the piston groove, connecting rods 12 are slidably inserted in the two pairs of through holes, and the two ends of the two pairs of connecting rods 12 are connected to the annular piston 9 and the piston plate 13. The annular air cavity 29 is connected to the air pipe 8 and the exhaust pipe 11, the air pipe 8 is connected to the air pump 10, and valves are provided on the air pipe 8 and the exhaust pipe 11.

[0027] Furthermore, the adjustment mechanism includes a rotating shaft 26 rotatably mounted in a fixed sleeve 21, with handles 27 and screw rods 25 connected to both ends of the rotating shaft 26, the screw rods 25 being screwed into the L-shaped fixed rod 20, a pair of limiting grooves 23 being opened in the inner wall of the fixed sleeve 21, limiting sliders 24 being slidably mounted in the pair of limiting grooves 23, and a pair of limiting sliders 24 being fixedly connected to both side walls of the L-shaped fixed rod 20, respectively, and two pairs of side plates 22 being provided on the outer wall of the fixed sleeve 21, and mounting holes being provided on the two pairs of side plates 22;

[0028] A side panel 22 with mounting holes is provided on the outside of the fixed sleeve 21, which can be fixed at the required position by screws. The rotating handle 27 drives the screw rod 25 to rotate through the rotating shaft 26, thereby pushing the position of the L-shaped fixing rod 20 in the fixed sleeve 21, and then adjusting the height of the housing 1 relative to the fixed sleeve 21.

[0029] Furthermore, one end of the conductive connecting rod 15 is connected to the copper shell 5, one end of the left wire 4 extends into the copper shell 5 and is connected to a conical copper sleeve 7, and a conical groove 6 is provided inside the copper shell 5, and the conical copper sleeve 7 can be inserted into the conical groove 6.

[0030] Furthermore, a fixed inner cylinder 17 is provided in the right connecting cylinder 16 , the right wire 19 is fixedly inserted in the fixed inner cylinder 17 and a copper head 18 is provided at one end, and the other end of the conductive connecting rod 15 can be inserted into the fixed inner cylinder 17 .

[0031] Furthermore, a spring 14 is sleeved on the outside of the conductive connecting rod 15 , and two ends of the spring 14 are connected to the piston plate 13 and the inner wall of the piston groove respectively.

[0032] Furthermore, a fixing ring 3 is fixedly installed inside the left connecting tube 2 , and the left conductive wire 4 is fixedly inserted into the fixing ring 3 .

[0033] Furthermore, fastening bolts 28 are provided on both end side walls of the housing 1 .

[0034] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process.

[0035] Embodiment: When short circuit grounding is required, start the air pump 10 to inflate the annular air cavity 29, push the annular piston 9 in the annular air cavity 29 to the right, and the annular piston 9 pushes the piston plate 13 to the right through the connecting rod 12 and compresses the spring 14 at the same time. The piston plate 13 drives the conductive connecting rod 15 to move to the right, so that one end of the conductive connecting rod 15 contacts the copper head 18, and the other end of the conductive connecting rod 15 pulls the copper shell 5 to move, so that the conical copper sleeve 7 is inserted into the conical groove 6, and finally the left side wire 4 forms a path with the right side wire 19 through the conical copper sleeve 7, copper shell 5, conductive connecting rod 15, copper head 18, and completes the grounding operation, that is, no manual close-range operation is required, and no complex circuit control is involved. It is simple to use and easy to operate.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0037] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A height-adjustable pneumatic short-circuit grounding device for a substation, comprising a housing (1) and a fixed sleeve (21), wherein an air pump (10) is provided outside the housing (1), and characterized in that: A left connecting cylinder (2) and a right connecting cylinder (16) are respectively inserted at both ends of the interior of the housing (1), a left wire (4) and a right wire (19) are respectively provided in the left connecting cylinder (2) and the right connecting cylinder (16), a piston groove is provided in the interior of the housing (1), a piston plate (13) is slidably installed in the piston groove, a conductive connecting rod (15) is provided in the piston plate (13), and a control mechanism is provided in the interior of the housing (1); An L-shaped fixing rod (20) is provided on the outer wall of the housing (1), and the L-shaped fixing rod (20) is movably inserted into a fixing sleeve (21), and an adjustment mechanism is provided in the fixing sleeve (21).

2. A height-adjustable pneumatic short-circuit grounding device for a substation according to claim 1, characterized in that: The control mechanism includes an annular air cavity (29) provided inside the housing (1), an annular piston (9) being slidably mounted in the annular air cavity (29), two pairs of through holes being provided between the annular air cavity (29) and the piston groove, connecting rods (12) being slidably inserted in the two pairs of through holes, the two pairs of connecting rods (12) having their ends connected to the annular piston (9) and the piston plate (13), an air pipe (8) and an exhaust pipe (11) being connected in the annular air cavity (29), the air pipe (8) being connected to the air pump (10), and valves being provided on both the air pipe (8) and the exhaust pipe (11).

3. The height-adjustable pneumatic short-circuit grounding device for a substation according to claim 1, characterized in that: The adjusting mechanism comprises a rotating shaft (26) rotatably mounted in a fixed sleeve (21), two ends of the rotating shaft (26) are respectively connected with a handle (27) and a screw rod (25), the screw rod (25) is screwed into the L-shaped fixed rod (20), a pair of limiting sliding grooves (23) are opened in the inner wall of the fixed sleeve (21), and limiting sliders (24) are respectively slidably mounted in the pair of limiting sliding grooves (23), and the pair of limiting sliders (24) are respectively fixedly connected to the two side walls of the L-shaped fixed rod (20), and two pairs of side plates (22) are respectively provided on the outer wall of the fixed sleeve (21), and the two pairs of side plates (22) are respectively provided with mounting holes.

4. The height-adjustable pneumatic short-circuit grounding device for a substation according to claim 1, characterized in that: One end of the conductive connecting rod (15) is connected to a copper shell (5), one end of the left-side wire (4) extends into the interior of the copper shell (5) and is connected to a conical copper sleeve (7), a conical groove (6) is provided inside the copper shell (5), and the conical copper sleeve (7) can be inserted into the conical groove (6).

5. The height-adjustable pneumatic short-circuit grounding device for a substation according to claim 1, characterized in that: A fixed inner cylinder (17) is provided in the right connecting cylinder (16), and the right conducting wire (19) is fixedly inserted in the fixed inner cylinder (17). The other end of the conductive connecting rod (15) can be inserted into the fixed inner cylinder (17) and one end is provided with a copper head (18).

6. The height-adjustable pneumatic short-circuit grounding device for a substation according to claim 1, characterized in that: The conductive connecting rod (15) is sheathed with a spring (14), and the two ends of the spring (14) are respectively connected to the piston plate (13) and the inner wall of the piston groove.

7. The height-adjustable pneumatic short-circuit grounding device for a substation according to claim 1, characterized in that: A fixing ring (3) is fixedly installed inside the left connecting tube (2), and the left conducting wire (4) is fixedly inserted into the fixing ring (3).

8. The height-adjustable pneumatic short-circuit grounding device for a substation according to claim 1, characterized in that: Fastening bolts (28) are provided on both end side walls of the housing (1).

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